Static characteristics of thermocouple sensor is what

Instrumentation thermocouple sensor products application field widely, in water conservancy and hydropower, railway transportation, intelligent buildings, production control, aerospace, military industry, petrochemical, oil, electric power, ships, machine tools, pipe and other industries have a certain application. Project is mainly to introduce instruments today thermocouple sensor static characteristic is what? Hope can help users better application products.

the static characteristic of thermocouple sensor refers to the input signal to static, thermocouple sensor has relationship between output and input. When input and output had nothing to do with the time, so the relationship between them, the static characteristics of the thermocouple sensor available does not contain a time variable algebra equation, or by typing the abscissa, the corresponding output as ordinate and draw to describe the characteristic curve.

thermocouple sensor static characteristic:

1, the linearity: refers to the thermocouple sensor output and input the actual relationship between the curve of the degree of deviating from the fitting line. Defined within the scope of whole range between actual characteristic curve and the fitting line of the ratio of the maximum deviation and the full scale output value.

2, sensitivity, sensitivity is an important indicator of thermocouple sensor static characteristic. Defined as the output increment and cause the increment of the ratio of the corresponding input increment. Use S sensitivity.

3, hysteresis: thermocouple sensor in the input quantity from small to large, Positive trip) And input from big to small, The trip) Change during the period of the input and output characteristic curve overlapping phenomenon not become sluggish. For the same size of the input signal, positive trip output signal of thermocouple sensor size is not equal, the difference is called retardation value.

4, repeatability, repeatability refers to the thermocouple sensor in according to the same direction as a full range of input change many times continuously, the characteristic curve of the degree of inconsistency.

5, drift, drift of thermocouple sensor is to point to in under the condition of invariable input, thermocouple sensor output change over time, this phenomenon is called drift. Causes of drift has two aspects: one is the structural parameters of thermocouple sensor itself; The second is the surrounding environment ( Such as temperature, humidity, etc. ) 。

6, resolution: when the thermocouple sensor input from a non-zero value increase slowly, after more than one increment observable changes in output, the input increment said thermocouple sensor resolution, namely the minimum input increment.

7, threshold: when the thermocouple sensor input from zero value began to slowly increase, after reaching a certain value after the observed changes in the output, the input values called thermocouple sensor threshold voltage.

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